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E.A.HOGKLEY. ORE GONGBNTRATOR.

No. 477,936. Patented June 28, 1892.

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(No Model.) I 3 Sheets-Sheet 2. E. A.'HOOKLEY. ORE GONGENTRATOR.

Patented June 28, 1892.

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(No Model.) 3 Sheets --Sheet 3.

EA. HOCKLEY. ORE GONCENTRATOR.

No. 477,936. Patented June 28, 1892.

12 40 m 7 E I m 8 2E 52 a A? 3 A2 @WWT - ATTORNEY.

UNiTED STATES PATENT OFFICE.

EDGAR A. HOOKLEY, OF OURAY, COLORADO, ASSIGNOR OF ONE-HALF TO ROSELLE WV. HASKINS, OF SAME PLACE.

ORE-CONQENTRATOR.

SPECIFICATION forming part of Letters Patent No. 477,936, dated June 28, 1892.

Application filed August 1, 1891.

citizen of the United States of America, residing at Ouray, in the county of Ouray and State of Colorado, have invented certain new and useful Improvements in Ore-Concentrators;

and I do declare the following to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it appertains to make and use the same, reference being had to the accompanying drawings, and to the figures of reference marked thereon, which form a part of this specification.

My invention relates to improvements in ore-concentrators of the gravity class; and the objectof the invention is to produce a thorough separation between the mineral and the gangue, collect the concentrates in bulk, and discharge them automatically and at intervals from the table. The discharge of the concentrates is determined by their gravity.

The invention will be fully understood by reference to the accompanying drawings, in which is illustrated an embodiment thereof.

In the drawings, Figure 1 is a top or plan View of my improved gravity concentratingtable. Fig. 2 is an end elevation of the same. Fig. 3 is a plan view with the table proper removed, its position being shown in dotted lines. Fig. 4 is a vertical section, on an enlarged scale, taken through one side of the tableon the line 22, Fig. 1. Fig. 5 is a similar section taken on the line w 10, Fig. 1. This View illustrates. the manner of automatically discharging the concentrates, the actuatingcam being shown in dotted lines. Figs. 6, 7, 8, and 9 are enlarged detail views of the rotating cam, Fig. 6 being an end View of the cam-face; Fig. 7, a section on the line 00 m, Fig. 6; Fig. 8, an edge view; and Fig. 9, a section on the line 'yiy, Fig. 6. Fig. 10 is a fragmentary view, on an enlarged scale,illustrating the Vertical adjustment of the springs supporting the table. Fig. 11 is a detail of construction. Fig. 12 is a fragmentary view of the feedtrough. Fig. 13 is a top or plan view of the machine. Fig. 14 is a fragmentary view of one side of the table, showing the feed-trough in place. Fig. 15 is a fragmentary top view.

of the table with the feed-trough removed.

poses of adjustment.

Serial No. 401,425. (No model.)

This View is designed to show the manner of connecting the sections of the table with the rod 13. v I

In the views,wherein similar reference charactors indicate corresponding parts of the mechanism, let the numerals 10 10,850., designate the upright frame parts, and 11 11, &c., the horizontal connecting-beams, forming a suitable rectangular supporting-frame for the table, composed of two sections 12 12, provided with a central hinge 13, consisting of a transverse rod, to which the inner or adjacent edges of the sections are so connected that their inclinations can be adjusted at will by the use of a screw-rod 14, pivoted to the hinge-rod at one extremity and passing through a threaded aperture formed in a ing 15, secured to the frame-work of the machine. The free extrem ity of this rod is provided with a hand-Wheel 16', whereby it may be easily turned for pur- Supported, also, by the central hinged rod of the table is a transverse perforated feed-trough 17,into which the material to be treated is first discharged in the form of a pulp and from which it is fed to both sections, which are inclined downwardly in opposite directions from the hinging-center. Each section may be provided with-an amalgamated plate 18, the purpose of which is to catch the free gold passing thereover. The table is further supported by springs 19 and 20, which are secured to the stationary frame-work at one extremity and connected with the undensurface of the table at the opposite extremity. .These springs are adjustable, as shown in Fig. 10, to permit the changing of the inclination of the sections of the table. There are preferably four springs 19, two supporting the outer portions of each section 12, and two springs 20, centrally located and to which are attached at any suit-- able point connecting-rods 21, said rods having their opposite extremities connected with cranks 23 of motor-shaft 22.

In the outer portion of each section 12 of the table and lying parallel or approximately parallel with the hinging center is formed a sort of open guide-trough 24L. Continuing outward from this trough each section 12 is form ed into a waste-trough 25. The trough 24 is open at the bottom, its sides being suitably connected at the ends. These troughs 24 and 25 may be formed integral with the table-sections. Within each open trough is supported and guided the vertically-movable trough 26, provided with a longitudinal slot 27 in the bottom. Beneath this slot is located a movable spring-actuated slide 28, adapted to close the slot normally. Pivoted to one side of trough 26 is a downwardly-projecting leverarm 29, to which is pivoted one extremity of a connecting-rod 30, the opposite extremity of this rod being pivoted to slide 28. Trough 26 is supported by a rod 31, made fast to the bottom of each extremity thereof, which is closed to permit the attachment of the rods, which extend upward, passing through apertures in cross-pieces 32. Extending across the top of troughs 24 above cross-pieces 32 and surrounding each rod 31 is a coil-spring 33, the lower extremity of which engages the cross piece, while the upper extremity is connected with a stop 34, formed upon the rod. These arms move freely in the openings formed in the cross-pieces supporting the springs.

The troughs 26 receive their concentrates, the gravity of which causes the troughs to descend until their laterally-movable arms 29 are engaged by cams 35, mounted upon shaft 22. These cams are of irregular shape, as shown in the drawings, and so located that when the troughs 26 descend sufficiently to bring the arms 29 in the path of the cams these arms are moved to one side sufficiently to open the slides 28 through the medium of the connecting-rod 30. This movement is illustrated by dotted lines in Fig. 5.

In the operation of the machine motion may be transmitted from any suitable motor to: shaft 22 by extending a belt from the motor-- to pulley 36. As this shaft rotates an oscillating movement is imparted to the table through the medium of the connecting-rods -21 and cranks 23.

The ends of troughs 24 are provided with resilient buffers 40, which may engage the uprights of the frame-work, giving'the tables a sufficient concussion or jar to separate the mineral from the gangue. From the feed-trough 17 the material to be treated passes to both sections of the table and down the inclined sides of these sections to the troughs 26, in which settles the concentrates,the lighter gangue collecting on top and finally passing over into the wastetroughs 25. The springs 23 are so adjusted that when a sufficient quantity of concentrates is collected in the troughs their gravity will cause the troughs to move downward, bringing the lever-arms 29 in the path of the cams 35, which engaging these arms give them sufficient lateral movement to open slides 28, when the concentrates in the troughs immediately pass out to a suitable receptacle below. The troughs then being relieved of their depressing load immediately return to their normal elevated position, carrying arms 29 out of the path of the actuating-cams when the slides 28, acted upon by the springs a, return to the closed position,when the trough begins to refill and the operation is repeated.

The springs 23 should be so regulated that when the concentrates have escaped from troughs 26 their gravity will be so diminished that the springs will raise the troughs and slides 28 will close before the gangue, or at least any considerable portion thereof can escape. It is believed this theory will hold true in practice, since the concentrates will be at the bottom of thetrough and the gangue .at the top.

Having thus described my invention, what I claim is- 1. The combination, with a concentratingtable, of oscillating supporting-arms therefor, means for actuating said arms, a spring-supported movable trough for the concentrates,

said trough having an opening, a spring-actuated slide normally closing said opening, and means foropening the slide and discharging the concentrates, substantially as de scribed.

2. The combination, in a concentrating-table, of two hinged oppositely-inclin ed sections, springs supporting the table, means for oscillating the same upon the springs, verticallymovable troughs located at the outer edges of the sections and provided with openings, spring-actuated slides normally closing said openings, and means for opening the slides and discharging the concentrates as the troughs are lowered by their gravity, substantially as described.

3. In a concentrator, the combination of a spring-supported oscillating table consistin g of hinged oppositely-inclined sections provided with movable troughs for the concentrates, said troughs having slots in the bottom normally closed byspring-actuated slides, laterally-movable arms connected with the troughs and projecting downward, rods connecting these arms with said slides, and r0- tating cams located below the troughs, whereby when a sufficient quantity of concentrates has settled in the troughs they move downwardly by gravity, bringing said arms in the path of the cams, when the slides are opened EDGAR A. IIOCKLEY. Witnesses:

D. W. POWERS, O. W. HASKINS. 

